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Pat Ballew  
Miscellaneous math links and explanations, including Discovery Units, some about geometry and some about algebra, written using the Geometer's Sketchpad: triangle medians (with explanation); angle bisectors in a triangle; three tangents to a circle; a minimum perimeter inscribed triangle; minimum length problems; a min/max problem; circumscribed triangles; the centroid; equations of lines; intercepts of lines; diagonals of a rhombus; lines in the plane (standard equation form); kissing circles; a Japanese temple problem; geometric centers; and a new discovery by Harold Stengel. See also Pat's blog, with a daily "On This Day in Math" as well as his thoughts on teaching math.  


Levels:  Middle School (68), High School (912), College 
Languages:  English 
Resource Types:  Problems/Puzzles, Geometer's Sketchpad, Web Interactive/Java 
Math Topics:  Equations, Conic Sections and Circles, Triangles and Other Polygons 
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